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Basis of Presentation - Recent Events (Details) $ / shares in Units, shares in Millions, $ in Millions |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 14, 2025 | Jun. 30, 2025 USD ($) $ / shares shares | Jun. 30, 2024 USD ($) shares | Jun. 23, 2025 | Dec. 31, 2024 $ / shares | Nov. 12, 2024 USD ($)
Liberty Broadband |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Number of shares repurchased | shares |  | 0.0 |  |  |  |
Class A common stock |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Common stock par value | $ / shares |  | $ 0.01 |  |  | $ 0.01 |
Series B common stock |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Common stock par value | $ / shares |  | 0.01 |  |  | 0.01 |
Series C common stock |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Common stock par value | $ / shares |  | $ 0.01 |  |  | $ 0.01 |
Series C common stock | Liberty Broadband |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Number of shares repurchased | shares |  |  | 1.1 |  |  |
Value of stock repurchased | $ |  |  | $ 89 |  |  |
Class A and C common stock | Liberty Broadband |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Remaining authorized repurchase amount | $ |  | $ 1,685 |  |  |  |
Charter | Liberty Broadband |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Maximum corporate level tax liability | $ |  |  |  |  |  | $ 420
GCI Liberty, Inc. |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Percentage of outstanding equity of GCI, LLC after spin-off |  |  |  | 100.00% |  |
GCI Liberty, Inc. | Subsequent event |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Spin-Off Distribution Ratio | 0.2 |  |  |  |  |

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